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Title: Macroscopic superposition and entanglement for displaced thermal fields induced by a single atom

Abstract

We show that a cavity field can evolve from an initial displaced mixed thermal state to a macroscopic superpositions of displaced thermal states via resonant interaction with a two-level atom. As a macroscopic system (meter) is really in a mixed state before coupling with the microscopic system at some temperature, our result is important for studying the quantum measurement problem and decoherence under real conditions. For the two-mode case, entanglement of displaced thermal states between the modes can be obtained.

Authors:
 [1]
  1. Department of Electronic Science and Applied Physics, Fuzhou University, Fuzhou 350002 (China)
Publication Date:
OSTI Identifier:
20982245
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevA.75.032114; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ATOMS; COUPLING; INFORMATION THEORY; INTERACTIONS; IONS; MIXED STATE; PHOTON-ATOM COLLISIONS; QUANTUM ENTANGLEMENT; TRAPPING

Citation Formats

Zheng, Shi-Biao. Macroscopic superposition and entanglement for displaced thermal fields induced by a single atom. United States: N. p., 2007. Web. doi:10.1103/PHYSREVA.75.032114.
Zheng, Shi-Biao. Macroscopic superposition and entanglement for displaced thermal fields induced by a single atom. United States. doi:10.1103/PHYSREVA.75.032114.
Zheng, Shi-Biao. Thu . "Macroscopic superposition and entanglement for displaced thermal fields induced by a single atom". United States. doi:10.1103/PHYSREVA.75.032114.
@article{osti_20982245,
title = {Macroscopic superposition and entanglement for displaced thermal fields induced by a single atom},
author = {Zheng, Shi-Biao},
abstractNote = {We show that a cavity field can evolve from an initial displaced mixed thermal state to a macroscopic superpositions of displaced thermal states via resonant interaction with a two-level atom. As a macroscopic system (meter) is really in a mixed state before coupling with the microscopic system at some temperature, our result is important for studying the quantum measurement problem and decoherence under real conditions. For the two-mode case, entanglement of displaced thermal states between the modes can be obtained.},
doi = {10.1103/PHYSREVA.75.032114},
journal = {Physical Review. A},
number = 3,
volume = 75,
place = {United States},
year = {Thu Mar 15 00:00:00 EDT 2007},
month = {Thu Mar 15 00:00:00 EDT 2007}
}
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